CA999356A - Liquid crystal drive circuit - Google Patents

Liquid crystal drive circuit

Info

Publication number
CA999356A
CA999356A CA174,322A CA174322A CA999356A CA 999356 A CA999356 A CA 999356A CA 174322 A CA174322 A CA 174322A CA 999356 A CA999356 A CA 999356A
Authority
CA
Canada
Prior art keywords
liquid crystal
drive circuit
crystal drive
circuit
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA174,322A
Other versions
CA174322S (en
Inventor
Robert C. Martin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Texas Instruments Inc filed Critical Texas Instruments Inc
Application granted granted Critical
Publication of CA999356A publication Critical patent/CA999356A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G99/00—Subject matter not provided for in other groups of this subclass
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C9/00—Electrically-actuated devices for setting the time-indicating means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/02—Component assemblies
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G5/00—Setting, i.e. correcting or changing, the time-indication
    • G04G5/04—Setting, i.e. correcting or changing, the time-indication by setting each of the displayed values, e.g. date, hour, independently
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0047—Details electrical, e.g. selection or application of the operating voltage
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/08—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
    • G04G9/12—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals
    • G04G9/126—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals provided with means for displaying at will a time indication or a date or a part thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/01—Details
    • H03K3/012—Modifications of generator to improve response time or to decrease power consumption
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
    • H03K3/289—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable of the master-slave type

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electric Clocks (AREA)
  • Bipolar Integrated Circuits (AREA)
  • Dc-Dc Converters (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
CA174,322A 1972-06-19 1973-06-18 Liquid crystal drive circuit Expired CA999356A (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US26381972A 1972-06-19 1972-06-19
US26382072A 1972-06-19 1972-06-19
US26421672A 1972-06-19 1972-06-19
US264212A US3886726A (en) 1972-06-19 1972-06-19 Electronic time keeping system
US00263920A US3809994A (en) 1972-06-19 1972-06-19 Low power dc-dc converter employing intermittent bursts of blocking oscillations
US00263818A US3828548A (en) 1972-06-19 1972-06-19 Liquid crystal drive circuit
US00263919A US3838564A (en) 1972-06-19 1972-06-19 Oscillator
US444233A US3893017A (en) 1972-06-19 1974-02-20 Regulator with bipolar transistors

Publications (1)

Publication Number Publication Date
CA999356A true CA999356A (en) 1976-11-02

Family

ID=27575302

Family Applications (8)

Application Number Title Priority Date Filing Date
CA174,309A Expired CA975063A (en) 1972-06-19 1973-06-18 Oscillator
CA174,322A Expired CA999356A (en) 1972-06-19 1973-06-18 Liquid crystal drive circuit
CA174,295A Expired CA1006588A (en) 1972-06-19 1973-06-18 Flip-flop element
CA174,308A Expired CA1011431A (en) 1972-06-19 1973-06-18 Time counting system
CA174,292A Expired CA1010971A (en) 1972-06-19 1973-06-18 Electronic time keeping system
CA174,294A Expired CA990349A (en) 1972-06-19 1973-06-18 Dc/dc convertor
CA174,307A Expired CA1006914A (en) 1972-06-19 1973-06-18 Current source regulator for electronic timekeeping device
CA257,423A Expired CA1013030A (en) 1972-06-19 1975-07-21 Current source regulator for electronic timekeeping device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA174,309A Expired CA975063A (en) 1972-06-19 1973-06-18 Oscillator

Family Applications After (6)

Application Number Title Priority Date Filing Date
CA174,295A Expired CA1006588A (en) 1972-06-19 1973-06-18 Flip-flop element
CA174,308A Expired CA1011431A (en) 1972-06-19 1973-06-18 Time counting system
CA174,292A Expired CA1010971A (en) 1972-06-19 1973-06-18 Electronic time keeping system
CA174,294A Expired CA990349A (en) 1972-06-19 1973-06-18 Dc/dc convertor
CA174,307A Expired CA1006914A (en) 1972-06-19 1973-06-18 Current source regulator for electronic timekeeping device
CA257,423A Expired CA1013030A (en) 1972-06-19 1975-07-21 Current source regulator for electronic timekeeping device

Country Status (5)

Country Link
US (7) US3809994A (en)
CA (8) CA975063A (en)
CH (2) CH888073A4 (en)
DE (1) DE2326899A1 (en)
GB (1) GB1435791A (en)

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JPS5331631B2 (en) * 1973-01-10 1978-09-04
US3937049A (en) * 1973-03-12 1976-02-10 Citizen Watch Co., Ltd. Monitoring system for digital electronic timepiece
US3986199A (en) * 1974-02-19 1976-10-12 Texas Instruments Incorporated Bipolar logic having graded power
US3965666A (en) * 1974-02-19 1976-06-29 Texas Instruments Incorporated Injection logic electronic watch having a current regulated oscillator
JPS50129263A (en) * 1974-04-01 1975-10-13
JPS50142078A (en) * 1974-05-01 1975-11-15
JPS50145269A (en) * 1974-05-14 1975-11-21
JPS5757716B2 (en) * 1974-05-16 1982-12-06 Citizen Watch Co Ltd
IT1039870B (en) * 1974-07-26 1979-12-10 Eurosil Gmbh ARRANGEMENT OF CONNECTIONS FOR AIMING RESPECTIVELY TO ADJUST A DEVICE FOR MEASURING TIME
JPS51101478A (en) * 1975-03-04 1976-09-07 Suwa Seikosha Kk
JPS51104376A (en) * 1975-03-11 1976-09-16 Citizen Watch Co Ltd
US4075826A (en) * 1975-05-19 1978-02-28 Hughes Aircraft Company Timing circuit for digital wristwatch
US4084402A (en) * 1975-05-22 1978-04-18 Hughes Aircraft Company Timing circuit for display sequencing in a digital wristwatch
US4060974A (en) * 1975-07-02 1977-12-06 Citizen Watch Company Limited Method and apparatus for driving electrochromic display device
JPS527279A (en) * 1975-07-07 1977-01-20 Toshiba Corp Electronic clock
US4100563A (en) * 1976-09-27 1978-07-11 Motorola, Inc. Semiconductor magnetic transducers
US4282567A (en) * 1976-10-26 1981-08-04 Texas Instruments Incorporated Modified power transformer for self-oscillating converter regulator power supply
US4156210A (en) * 1976-10-29 1979-05-22 Biometrics Instrument Corp. Resonant transformer push-pull transistor oscillator
US4132996A (en) * 1976-11-08 1979-01-02 General Electric Company Electric field-controlled semiconductor device
US4138671A (en) * 1977-02-14 1979-02-06 Precision Monolithics, Inc. Selectable trimming circuit for use with a digital to analog converter
US4168531A (en) * 1978-01-24 1979-09-18 General Electric Company Real-time clock having programmable time initialization and read-out
US4249123A (en) * 1978-10-25 1981-02-03 Texas Instruments Incorporated Temperature compensated reference voltage regulator
JPS5689790A (en) * 1979-12-24 1981-07-21 Hosiden Electronics Co Channel display unit
US4447776A (en) * 1981-04-24 1984-05-08 The United States Of America As Represented By The Secretary Of The Navy Pulse driver for flux gate magnetometer
US4593279A (en) * 1981-12-24 1986-06-03 Texas Instruments Incorporated Low power liquid crystal display driver circuit
US4500831A (en) * 1982-12-27 1985-02-19 Motorola, Inc. Current source
US4578599A (en) * 1983-06-02 1986-03-25 Motorola, Inc. Flip-flop having improved synchronous reset
US4831281A (en) * 1984-04-02 1989-05-16 Motorola, Inc. Merged multi-collector transistor
US4730127A (en) * 1986-12-22 1988-03-08 Motorola, Inc. Method of matching currents from split collector lateral pnp transistors
US5604466A (en) * 1992-12-08 1997-02-18 International Business Machines Corporation On-chip voltage controlled oscillator
US6611377B1 (en) * 2000-07-10 2003-08-26 Intel Corporation Micromechanical diffraction phase grating
US7071749B2 (en) 2002-03-25 2006-07-04 Aeroflex Colorado Springs Inc. Error correcting latch
US6700450B2 (en) * 2002-07-29 2004-03-02 Cognio, Inc. Voltage-controlled oscillator with an automatic amplitude control circuit
US20080238619A1 (en) * 2007-03-30 2008-10-02 Broadcom Corporation Active/passive rfid tag
CN104851726B (en) * 2015-05-11 2018-03-30 广东小天才科技有限公司 Key structure and electronic equipment with same

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US3072155A (en) * 1958-09-19 1963-01-08 Sulzer Ag Thread clamp for weaving machines
US3146418A (en) * 1960-05-11 1964-08-25 Maeda Hisao Variable inductor
US3327244A (en) * 1963-12-27 1967-06-20 Charles W Fay Dc-dc converter including a multivibrator operative at a desired frequency
US3654493A (en) * 1965-06-21 1972-04-04 Sylvania Electric Prod Bistable logic circuits utilizing a charge stored during a clock pulse to change the operating state on the trailing edge of the clock pulse
CH1879966A4 (en) * 1966-12-30 1972-07-31 Centre Electron Horloger Quartz watch
DE1673776A1 (en) * 1967-04-19 1971-02-25 Siemens Ag Circuit arrangement for contactless control of a mechanical oscillator
US3518458A (en) * 1967-06-23 1970-06-30 Mallory & Co Inc P R Decoupling means for integrated circuit
US3534245A (en) * 1967-12-08 1970-10-13 Rca Corp Electrical circuit for providing substantially constant current
US3577167A (en) * 1968-02-29 1971-05-04 Rca Corp Integrated circuit biasing arrangements
CH484521A (en) * 1968-07-06 1970-01-15 Foerderung Forschung Gmbh Electronic circuit arrangement with at least one integrated circuit
DE1811045C3 (en) * 1968-11-26 1973-11-15 Siemens Ag, 1000 Berlin U. 8000 Muenchen Adjustable pot core coil for printed circuits
US3560766A (en) * 1969-01-21 1971-02-02 Sprague Electric Co High speed logic element
US3596462A (en) * 1969-01-31 1971-08-03 Royce Hayes Electronic clock
US3550053A (en) * 1969-05-15 1970-12-22 Eliot Joseph Carlo Welding transformer
CH567299A (en) * 1969-10-21 1975-09-30
CH569320B5 (en) * 1970-03-06 1975-11-14 Rolex Montres
US3612984A (en) * 1970-05-08 1971-10-12 Motorola Inc Negative voltage regulator adapted to be constructed as an integrated circuit
US3699703A (en) * 1970-05-20 1972-10-24 Thomas C Biecker Puppet theater
US3653745A (en) * 1970-06-11 1972-04-04 Rca Corp Circuits for driving loads such as liquid crystal displays
JPS4711874A (en) * 1970-11-05 1972-06-14
GB1343660A (en) * 1970-12-29 1974-01-16 Suwa Seikosha Kk Timepiece
US3629692A (en) * 1971-01-11 1971-12-21 Rca Corp Current source with positive feedback current repeater
US3683270A (en) * 1971-02-22 1972-08-08 Signetics Corp Integrated circuit bilateral current source
US3701249A (en) * 1971-03-12 1972-10-31 Hamilton Watch Co Solid state timepiece with liquid crystal display
US3676712A (en) * 1971-03-22 1972-07-11 Motorola Inc Monolithic non-saturating storage circuit
US3735240A (en) * 1971-10-15 1973-05-22 Motorola Inc Integrated circuit current regulator with differential amplifier control
US3772874A (en) * 1971-12-09 1973-11-20 Princeton Materials Science Display apparatus and chronometer utilizing optically variable liquid
US3753078A (en) * 1972-05-03 1973-08-14 Gen Electric Foldback current control circuit
US3738099A (en) * 1972-06-07 1973-06-12 Seiko Instr & Electronics Digital electronic watch having calendar display arrangement

Also Published As

Publication number Publication date
US3828548A (en) 1974-08-13
US3809994A (en) 1974-05-07
US3838564A (en) 1974-10-01
CA975063A (en) 1975-09-23
CH888073A4 (en) 1977-07-15
CA1011431A (en) 1977-05-31
CH600417B5 (en) 1978-06-15
GB1435791A (en) 1976-05-12
CA1006914A (en) 1977-03-15
US4080780A (en) 1978-03-28
US3893017A (en) 1975-07-01
CA1013030A (en) 1977-06-28
CA1006588A (en) 1977-03-08
US3783308A (en) 1974-01-01
CA990349A (en) 1976-06-01
DE2326899A1 (en) 1974-01-10
CA1010971A (en) 1977-05-24
US3886726A (en) 1975-06-03

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